package: win32: don't install Qt pdbs if Qt is disabled

extras/package/win32/package.mak

@@ -29,7 +29,9 @@ if ENABLE_PDB
 	cp lib/.libs/libvlc.pdb '$(DESTDIR)$(bindir)'
 	cp src/.libs/libvlccore.pdb '$(DESTDIR)$(bindir)'
 	find '$(DESTDIR)$(libdir)/vlc/plugins' -name "*.dll" -exec sh -c "echo {} | sed -e 's@$(DESTDIR)$(libdir)/vlc/plugins/\(.*\)/\(.*\).dll@modules/.libs/\2.pdb $(DESTDIR)$(libdir)/vlc/plugins/\1@' | xargs -t cp " \;
+if ENABLE_QT
 	find modules/gui/qt/.libs/ -name "*.pdb" -exec cp {} '$(DESTDIR)$(libdir)/vlc/plugins/gui/' \;
+endif
 endif
 	touch $@